Revert "libandroidfw hardening for IncFs"

Revert "Move map_ptr to incfs namspace"

Revert submission 12787270

Reason for revert: b/173250495
Reverted Changes:
I5cd1bc8a2:libandroidfw hardening for IncFs
Ice5dbcfb2:Move map_ptr to incfs namspace
I29ccdc8ed:Do not cache bag parent stack until requested
I1e9e9acaa:Cache resolved theme values

Change-Id: Ib90ef68339710086df41e9abe0833a542d03a74f
diff --git a/libs/androidfw/tests/TestHelpers.cpp b/libs/androidfw/tests/TestHelpers.cpp
index 10c0a4f..a81bb6f 100644
--- a/libs/androidfw/tests/TestHelpers.cpp
+++ b/libs/androidfw/tests/TestHelpers.cpp
@@ -73,15 +73,11 @@
     return AssertionFailure() << "table has no string pool for block " << block;
   }
 
-  auto actual_str = pool->string8ObjectAt(val.data);
-  if (!actual_str.has_value()) {
-    return AssertionFailure() << "could not find string entry";
+  const String8 actual_str = pool->string8ObjectAt(val.data);
+  if (String8(expected_str) != actual_str) {
+    return AssertionFailure() << actual_str.string();
   }
-
-  if (String8(expected_str) != *actual_str) {
-    return AssertionFailure() << actual_str->string();
-  }
-  return AssertionSuccess() << actual_str->string();
+  return AssertionSuccess() << actual_str.string();
 }
 
 }  // namespace android